| Interface | Description | 
|---|---|
| MultipleTypeIdResolver | This is an extension of  TypeIdResolverfor serializing and deserializing polymorphic types. | 
| Class | Description | 
|---|---|
| IonAnnotationIntrospector | A Jackson  AnnotationIntrospector(essentially an interceptor for
 serializer/deserializer construction) that provides type serializer/deserializers that write/read Ion type
 annotations. | 
| IonAnnotationTypeDeserializer | This is a  TypeDeserializerthat reads typing metadata from Ion type
 annotations. | 
| IonAnnotationTypeResolverBuilder | A  TypeResolverBuilderwhich producesTypeSerializers andTypeDeserializers that use
 Ion type annotations to communicate type metadata. | 
| IonAnnotationTypeSerializer | This is a  TypeSerializerthat places typing metadata in Ion type annotations. | 
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